What does "corridor" mean?

A narrow hall or passage with rooms leading off it, as in a building or in a railway carriage.

What is a synonym for "corridor"?

Common synonyms include: hallway, access, adit, air lane, air line, air lock.

//ˈkɒɹɪdɔː// noun

noun ·Moderate ·High school level

Noun

1
A narrow hall or passage with rooms leading off it, as in a building or in a railway carriage.
"There is an hour or two, after the passengers have embarked, which is disquieting and fussy.[…]Stewards, carrying cabin trunks, swarm in the corridors. Passengers wander restlessly about or hurry, with futile energy, from place to place."
2
an enclosed passageway; rooms usually open onto it wordnet
3
A restricted tract of land that allows passage between two places.
"In addition, there are two up and two down korridorzug ^([sic]) [Korridorzüge] of the O.B.B. which run through from Innsbruck to Reutte via the Mittenwald line, but which are "sealed" between Scharnitz through Garmisch-Partenkirchen as far as Ehrwald, carrying passengers only from Austria to Austria; the korridor thus refers to the corridor through Germany and not through the train."
4
The covered way lying round the whole compass of the fortifications of a place. historical, rare
5
Airspace restricted for the passage of aircraft.